Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 7 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — acid and base, indicator colours, chemical change, what seeds and yeast need, transpiration, crystals or filtering. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is what we measure. (a) False (b) True
3. 3.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is kept the same. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) reading the message (b) cutting the lemon (c) dipping the cotton bud (d) writing the message
5. 5.True or false: tamarind water is neutral. (a) True (b) False
6. 6.🧺 Do we need cotton wool for sprouting seeds? (a) not needed (b) needed
7. 7.🌱 Which of these does not sprout? (a) seeds on wet cotton (b) wet seeds in the dark (c) seeds in the freezer (d) wet seeds by a window
8. 8.🔍 Which is the odd one out? (a) vinegar (b) warm water (c) sunlight (d) salt
9. 9.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
10. 10.🌱 Will these sprout: boiled seeds? (a) sprouts (b) does not sprout
11. 11.True or false: seeds on wet cotton sprouts in a few days. (a) True (b) False
12. 12.True or false: a magnet is needed for the secret lemon message. (a) True (b) False
13. 13.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) salt (d) a magnet
14. 14.🪴 Which part of a plant does this job: give out water vapour? (a) stem (b) roots (c) leaves (d) flower
15. 15.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
16. 16.🔍 Which is the odd one out? (a) sawdust (b) sand (c) glucose powder (d) cooking oil
17. 17.True or false: sugar is not needed for the fizzy balloon. (a) False (b) True
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the liquid we test (c) the number of drops (d) the turmeric paper
19. 19.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
20. 20.🧺 Which of these is not needed for the secret lemon message? (a) a small bowl (b) an adult with an iron (c) white paper (d) yeast
21. 21.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a magnet (c) an indicator (d) a pulley
22. 22.🍞 Why do we add sugar to the yeast? (a) it is food for yeast (b) to make it heavy (c) to colour it (d) to make it sweet
23. 23.🔍 Which is the odd one out? (a) warmth (b) salt (c) soil (d) sugar
24. 24.🔍 Which is the odd one out? (a) cutting the lemon (b) plugging in the iron (c) letting the paper dry (d) ironing the paper
25. 25.🔍 Which is the odd one out? (a) dipping the cotton bud (b) writing the message (c) reading the message (d) putting the iron away
26. 26.🧺 Do we need warm water for the yeast balloon? (a) not needed (b) needed
27. 27.🧺 Do we need cold water to rinse for making butter? (a) needed (b) not needed
28. 28.True or false: sunlight is not needed for the leafy bag test. (a) False (b) True
29. 29.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) a timer (c) a mirror (d) cold water to rinse
30. 30.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) next to the baby (d) on the edge of a table
31. 31.🫧 Which of these is an acid? (a) detergent water (b) baking soda water (c) tamarind water (d) sugar water
32. 32.True or false: a few hours is needed for the leafy bag test. (a) False (b) True
33. 33.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) muddy water (d) a battery cell
34. 34.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
35. 35.🛟 Which safety rule fits the fizzy balloon experiment? (a) keep it away from eyes (b) put it in your mouth (c) shake it near your face (d) seal it in a glass jar
36. 36.🧺 Which of these is not needed for the secret lemon message? (a) an adult with an iron (b) a balloon (c) lemon juice (d) a small bowl
37. 37.🧺 Do we need a cotton bud for the secret lemon message? (a) needed (b) not needed
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) a comb (d) white paper strips
39. 39.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the same kind of bag (b) the size of the plant (c) sun or shade (d) the kind of plant
40. 40.🔍 Which is the odd one out? (a) browning lemon ink (b) baking a cake (c) cooking an egg (d) melting butter

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